#!/usr/bin/env python3
# -*- encoding: utf-8 -*-
"""
@UserFor     :   ***  https://leetcode-cn.com/problems/maximal-square/  ***
@File        :   middle-221-最大正方形.py    
@Email       :   18574945291@163.com
@Modify Time :   2021-02-15 16:39
@Author      :   code_wizard (wll) 
"""

class Solution:
    def maximalSquare(self, matrix):
        pass